For decades Yemenis had held a privileged position in Saudi Arabia, able to work and trade without the sponsorship required of other foreigners. After Iraq's invasion of Kuwait in August 1990, newly unified Yemen took a position on the Security Council and in the Arab League that Riyadh treated as support for Iraq, and in September 1990 Saudi Arabia withdrew the exemption, requiring Yemenis to obtain Saudi sponsors within a month. Between 800,000 and one million Yemenis left or were expelled within months, together with their families, in one of the largest sudden labour expulsions of the period and a close parallel to the simultaneous expulsion of Palestinians from Kuwait. The effect on Yemen was severe: remittances and Gulf assistance worth roughly 1.7 billion dollars a year were lost, poverty rose from about 15 to 35 per cent of the population and unemployment from about 4 to 25 per cent on the figures reported by MERIP and by international financial institutions, tent settlements grew around Hudayda and other towns, and returnee grievances fed the riots of December 1992 and the tensions that produced the 1994 civil war. Saudi Arabia has repeated smaller mass deportations of Yemenis since, notably in 2013.
Saudi Arabia revoked the privileged residence status of Yemeni workers after Yemen's position in the Gulf crisis, forcing a mass return
Yemenis had held a privileged status exempting them from the Saudi sponsorship (kafala) system, and estimates of the community on the eve of the crisis range from about 800,000 to 1.5 million including dependants. When the exemption was revoked in September 1990 after Yemen's position on the Kuwait crisis, roughly 730,000-850,000 returned to Yemen within months, a shock equal to about 7 per cent of Yemen's own population of some 11.9 million and costing it an estimated $1.7 billion a year in remittances.
There was no significant death toll from the expulsion itself, which was an administrative removal of residence rights rather than a violent operation; the consequences were economic, and the sharp rise in poverty is likely to have raised mortality in ways never measured.
Contemporary reporting documented the sudden withdrawal of the legal status under which Yemenis had resided and worked, forcing departure; no other form is documented.
Yemen, Saudi Arabia